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moby--moby/daemon/kill.go

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package daemon
import (
"fmt"
"syscall"
)
// ContainerKill send signal to the container
// If no signal is given (sig 0), then Kill with SIGKILL and wait
// for the container to exit.
// If a signal is given, then just send it to the container and return.
func (daemon *Daemon) ContainerKill(name string, sig uint64) error {
container, err := daemon.Get(name)
if err != nil {
return err
}
// If no signal is passed, or SIGKILL, perform regular Kill (SIGKILL + wait())
if sig == 0 || syscall.Signal(sig) == syscall.SIGKILL {
if err := container.Kill(); err != nil {
return fmt.Errorf("Cannot kill container %s: %s", name, err)
}
} else {
// Otherwise, just send the requested signal
if err := container.KillSig(int(sig)); err != nil {
return fmt.Errorf("Cannot kill container %s: %s", name, err)
}
}
return nil
}